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Type: Task
Resolution: Fixed
Priority: P4
Fix Version/s: 25
Affects Version/s: 24, 25
Component/s: hotspot
Labels:

Subcomponent:
gc
Resolved In Build:
b13

The generational mode uses a 'regulator thread' (RT) to evaluate heuristics while the control thread (CT) is running a cycle. This allows the RT to interrupt an old cycle run by the CT so that the RT can have the CT run a young cycle instead. In some cases, the RT thread's request to cancel old marking may be delayed long enough to land on the young cycle that the RT itself requested. This leaves the collector in a confused state and may result in crashes.

causes

JDK-8352299 GenShen: Young cycles that interrupt old cycles cannot be cancelled

Resolved

JDK-8360595 [TESTBUG] AArch64: test/jdk/java/foreign/TestUpcallStress.java fails intermittently with -XX:+UseShenandoahGC after JDK-8349094

relates to

JDK-8351464 Shenandoah: Hang on ShenandoahController::handle_alloc_failure when run test TestAllocHumongousFragment#generational

Resolved

links to

Commit(master) openjdk/jdk/3a8a432c

Commit(master) openjdk/shenandoah-jdk21u/9a690ba3

Review(master) openjdk/jdk/23475

Review(master) openjdk/shenandoah-jdk21u/174

(2 links to)

Assignee:: William Kemper

Reporter:: William Kemper

Votes:: 0 Vote for this issue

Watchers:: 4 Start watching this issue

Created:: 2025-01-30 11:03

Updated:: 2025-06-28 02:29

Resolved:: 2025-03-03 16:44

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